Rolex GMT Master ref.1675 "Long E" from 1970

Early versions of the Pepsi bezel on the GMT-Master ref.1675 are often known as "Fat Font" bezels due to their noticeably thicker 24-hour numerals. Over time, Rolex introduced later editions of the GMT-Master ref. 1675 with bezels featuring slimmer numerals. 

Another cool feature of this particular watch is the mk1 matte Long-E dial, the earliest of the matte dials distinguished by a longer E font in the word Rolex.

The first 1675 watches were equipped with the Rolex caliber 1565, but in 1965, Rolex transitioned to using caliber 1575 (although it was essentially a 1570/5 with a date function, only marked as 1570). This movement had a higher oscillation rate (19,800 vibrations per hour) compared to the earlier 18,000 vph. In 1971, caliber 1575 was modified to include a hacking feature, causing the seconds hand to stop when the crown was pulled out.

Model: Gmt Master
Year of manufacture: 1970
Serial number: 2.4xx.xxx
Bezel: Original fat font "Arancia"
Dimensions: 39mm 
Reference number: 1675
movement: correct 1570 (1575)
Bracelet : Ref. 7836 folded links with 280 end links
Box/Papers: No.

Comments: The watch was subjected to a mechanical inspection by our watchmaker and appears to be in great working conditions keeping excellent time and water tested to 5 bar. minute hand repaired.